A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5920-00-754-7706
NSN 5975-01-489-5483
NSN 6145-01-491-5021
NSN 4140-01-072-8326
NSN 2925-01-589-9136
NSN 6110-01-516-8894
NSN 5998-00-719-6812
NSN 5835-00-102-2373
NSN 5855-01-247-9666
NSN 2925-01-027-1293
NSN 5855-00-494-9581
NSN 5965-01-462-2291